Graco ToughTek MP-Series Instruction Manual

3A4789E
EN
Operation
ToughTek®MP-Series Mixing Pumps
Electric mixing pump for use with Ardex brand self-leveling underlayment materials. For
professional use only.
Not approved for use in explosive atmospheres or hazardous locations.
See page 2 for model information.
Maximum Working Pressure: 300 psi (2.07 MPa, 20.7 bar)
Important Safety Instructions
Read all warnings and instructions in this and all
related manuals. Save these instructions.
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23A4789E
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Component Identification . . . . . . . . . . . . . . . . . . . . 5
MP-20 and MP-40 Series . . . . . . . . . . . . . . . . . . 5
Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Control Box Control Panel . . . . . . . . . . . . . . . . . 6
Water Pressure Over-ride Plug (OP) . . . . . . . . . 7
Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Connections . . . . . . . . . . . . . . . . . . . . 9
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Priming Hoses with Water . . . . . . . . . . . . . . . . . 10
Priming System with Water . . . . . . . . . . . . . . . . 12
Pump Pressure Setting . . . . . . . . . . . . . . . . . . . 13
Prime and Pump Material . . . . . . . . . . . . . . . . . 14
Pressure Relief Procedure . . . . . . . . . . . . . . . . 15
System Flush . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Hose Flush . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Winterizing and Extended Storage . . . . . . . . . . 18
Startup After Extended Storage . . . . . . . . . . . . 19
Routine Maintenance . . . . . . . . . . . . . . . . . . . . 20
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Rotor/Stator Pump Repair . . . . . . . . . . . . . . . . . 25
Motor Seal Replacement . . . . . . . . . . . . . . . . . 26
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
MP-20 and MP-40 Series Parts . . . . . . . . . . . . 28
MP-20 and MP-40 Parts List . . . . . . . . . . . . . . . 29
Water Control Assembly (Ref. 3) . . . . . . . . . . . 32
Water Control Assembly Parts List . . . . . . . . . . 33
Water Pump Assembly (Ref. 4) . . . . . . . . . . . . 34
Water Pump Assembly Parts List . . . . . . . . . . . 35
Drive Shaft (Ref. 7) . . . . . . . . . . . . . . . . . . . . . . 36
Motor Assemblies (Ref. 10) . . . . . . . . . . . . . . . 37
Power Cable (Ref. 56) . . . . . . . . . . . . . . . . . . . 40
Electrical Enclosure (Ref. 2) Parts . . . . . . . . . . 41
Electrical Enclosure Parts List . . . . . . . . . . . . . 42
Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . 43
MP-20 (MTA708) . . . . . . . . . . . . . . . . . . . . . . . . 43
MP-20 16A (MTA709) . . . . . . . . . . . . . . . . . . . . 44
MP-40 (MTA710) . . . . . . . . . . . . . . . . . . . . . . . . 45
MP-40 380 Vac and Neutral (MTA711) . . . . . . . 46
Din Rail Assembly Modules . . . . . . . . . . . . . . . . 47
Systems and Accessories . . . . . . . . . . . . . . . . . . . 48
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Rotor/Stator Pump Kits . . . . . . . . . . . . . . . . . . . 48
Nozzle Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Motor Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Drive Shaft Kits . . . . . . . . . . . . . . . . . . . . . . . . . 49
Water Pump System Kits . . . . . . . . . . . . . . . . . . 49
Enclosure Kits . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Wheels and Casters Kits . . . . . . . . . . . . . . . . . . 49
Dimensions (for all models) . . . . . . . . . . . . . . . . . 50
Technical Specifications . . . . . . . . . . . . . . . . . . . . 52
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 56
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 56
Related Manuals
Manuals are available at www.graco.com
Models with Water Pump
Manual Description
3A4554 ToughTek Mortar Coupling Hose
3A5637 ToughTek Camlock Mortar Hose
Model Part Series Description Power
MP-20
25M070 D ToughTek
MP-20
200-240 VAC,
1 Phase, 60 Hz
25M071 D ToughTek
MP-20 16A
200-240 VAC,
1 Phase, 50 Hz
MP-40
25M072 D ToughTek
MP-40
200-240 VAC,
3 Phase, 60 Hz
25M073 D ToughTek
MP-40 380V
350-415 VAC,
3 Phase, 50 Hz

Warnings
3A4789E 3
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When
these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific
hazard symbols and warnings not covered in this section may appear throughout the body of this manual where
applicable.
WARNING
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equip-
ment, follow the Pressure Relief Procedure and disconnect all power sources.
ELECTRIC SHOCK HAZARD
This equipment must be grounded. Improper grounding, setup, or usage of the system can cause
electric shock.
• Turn off and disconnect power before servicing equipment.
• Connect only to grounded electrical outlets.
• Ensure ground prongs are intact.
• Do not expose to rain. Store indoors.
• All electrical wiring must be done by a qualified electrician and comply with all local codes and
regulations.

Warnings
43A4789E
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Specifi-
cations in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete
information about your material, request Safety Data Sheets (SDSs) from distributor or retailer.
• Do not leave the work area while equipment is energized or under pressure.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine man-
ufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and cre-
ate safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
PRESSURIZED EQUIPMENT HAZARD
Fluid from the equipment, leaks, or ruptured components can splash in the eyes or on skin and cause
serious injury.
•Relieve Pressure when you stop spraying/dispensing and before cleaning, checking, or servicing
equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read Safety Data Sheets (SDSs) to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but is not
limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent
manufacturer.
WARNING

Component Identification
3A4789E 5
Component Identification
MP-20 and MP-40 Series
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Ref. Description
A Pressure Test Hose
B Power Cable
C Motor Cable
D Drive/Mix Shaft
E Gear Box Motor
F Rotor/Stator Pump
G Control Box
H Hopper
J Hopper Grate
K Motor Latch
L Pump Assembly Outlet
M Clean-Out Shaft
N Water Pump
P Water Pump Inlet
R Water Flow Meter
S Wash-Down Hose
GG Water Flow Adjustment Valve
HH Water Pump System Bypass Outlet
Ref. Description

Component Identification
63A4789E
Control Box
Control Box Control Panel
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Ref. Description
AA Power Out Connector
BB Main Power In Connector
CC Water Valve Connector
DD Water Pressure Connector
EE Remote Switch Connector
FF Water Pump Connector
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Ref. Description
T Main Power Disconnect Switch
U Start/Stop Push Button
V Speed Selector Knob
W Forward/Reverse Pump Direction Switch
Y Water Prime Button
Z Water Pump Button

Component Identification
3A4789E 7
Water Pressure Over-ride Plug (OP)
The water solenoid valve requires 40 psi of water pressure to be energized. If the water pressure is not 40 psi or
greater, the solenoid valve will remain normally closed, blocking the flow of water. This operation can be overridden
by unplugging the water pressure connector (DD) and connecting the water pressure override plug (OP). This mimics
the signal that water pressure of 40 psi or greater is present, even when it is not.
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Set Up
83A4789E
Set Up
NOTE: For letter references, see the Component
Identification section, starting on page 5.
1. Assemble the drive/mix shaft (D) into the hopper
and engage the flat end as shown below into the
slot of the rotor (RS).
A
2. Slowly swing the motor assembly toward its closed
position, stopping shortly before the motor shaft
adapter (MS) and drive/mix shaft (D) touch.
3. Make sure the motor shaft adapter (MS) and
drive/mix shaft (D) are aligned so the drive shaft flat
slides into the motor shaft adapter slot. If they do not
align, rotate them into position.
4. Swing the motor completely shut and lock it in place
with the motor latch (K).
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Set Up
3A4789E 9
5. Secure the hopper grate (J) onto the top of the hop-
per (H).
6. Connect the motor cable (C) to the power out con-
nector (AA).
7. Verify that the main power disconnect switch (T) is
OFF.
8. Connect the power cable (B) to an appropriate
power source.
9. Connect power cable (B) to the main power in con-
nector (BB).
Electrical Connections
Power Cable Color Code
Grounding
The system is grounded through the power cord.
To help prevent injury from moving parts, do not
operate with the grate (J) removed.
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AA
Power Cable MTA727
(for systems 25M070, 25M071):
Line 1 Black
Line 2 White
Ground Green
Power Cable MTA728
(for systems 25M072):
Line 1 Black
Line 2 White
Line 3 Red
Ground Green
Power Cable MTA851
(for systems 25M073):
Line 1 Black
Line 2 White
Line 3 Red
Neutral Orange
Ground Green
The equipment must be grounded to reduce the risk
of static sparking and electric shock. Electric or static
sparking can cause fumes to ignite or explode.
Improper grounding can cause electric shock.
Grounding provides an escape wire for the electric
current.

Operation
10 3A4789E
Operation
NOTE: For letter references, see the Component
Identification section, starting on page 5.
Priming Hoses with Water
1. Attach a water feed hose to the water pump inlet
(P).
NOTE: The water pump inlet is 3/4 in. female garden
hose fitting.
NOTE: The water feed must be able to supply water
pressure of 30 psi or greater, or else the pump will not
operate in the forward direction. A pressure switch that
controls the pump forward direction operation activates
at 30 psi to allow forward operation. If water pressure is
below 30 psi and the pump must be operated in the for-
ward direction, the pressure switch can be bypassed by
connecting the water pressure bypass plug.
2. Attach the hose to the water pump system bypass
outlet (HH).
3. Place the end of the hose into a waste container.
4. Turn the main power disconnect switch (T) to ON.
5. Open the ball valve directly before the water pump
system bypass outlet (HH).
6. Press the water pump button (Z) to turn on the water
pump.
7. Run water until water flows from the end of the
hose.
8. Press the water pump button (Z) to stop the water
pump and close the ball valve directly before the
water pump system bypass outlet (HH).
NOTICE
To prevent material curing in the hose, never load
material into a dry hose. Loading material into a dry
hose will cause the material to stick to components and
cure, causing damage and requiring replacement of
those parts.
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NOTICE
Do not allow the water pump to operate with no flow
for more than five minutes. The water pump can
become overheated and become damaged.
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Operation
3A4789E 11
9. Run clean-out ball(s) to coat the inside of the hoses:
a. Remove the hose inlet from the water pump
system bypass outlet (HH) and place a hose
clean-out ball within the hose inlet. The ball
must be wetted down before inserting. If using a
1 in. whip hose, begin with the smallest
clean-out ball.
b. Reattach the hose to the water pump system
bypass outlet (HH), open the ball valve, and
press the water pump button (Z) to resume
flushing the hose.
c. The clean-out ball will be pushed out of the
hose after several minutes. Once the ball is
pushed through the hose, press the water pump
button (Z).
d. If using a 1 in. whip hose, remove the hose and
transition fitting and repeat the process using
the large clean-out ball on the remaining hoses.
Once the ball is pushed out, stop the water
pump and reattach the transition fitting and whip
hose.
10. After using the clean-out ball(s), close the ball valve,
remove the hose inlet from the water pump system
bypass outlet (HH), and attach the hose inlet to the
pump outlet (L).
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Operation
12 3A4789E
Priming System with Water
1. Remove the Geka fitting cap (GF) from the lower
port.
2. Press the water pump button (Z), then hold the
water prime button (Y) for several seconds. The
water flow adjustment valve (GG) must be open.
Once water flows from the lower port, release the
water prime button (Y).
NOTE: If water does not fill the mixing chamber, see
Startup After Extended Storage, page 19, or con-
tact Graco Technical Support.
3. Add dish soap or a slicking agent to the water
through the lower port and replace the Geka fitting
cap (GF).
NOTE: When priming with water, add dish soap or a
slicking agent to help lubricate the pump. Priming
with water only may cause excessive pump friction,
producing a high pitch noise and premature pump
wear.
4. Turn the speed selector knob (V) to speed 1 and
press the START button (U). Press the STOP button
(U) once the pump starts rotating freely.
NOTE: Do not run the rotor/stator pump with water
for more than five minutes at a time or premature
pump wear may occur.
5. If the pump does not rotate within five seconds of
pressing the START button (U), with the pump on,
quickly turn the pump direction switch (W) between
forward and reverse.
NOTE: The pump direction switch (W) is nor-
mally in the FWD position. The switch must be
held in the REV position to reverse the pump
direction. The switch will return to the FWD
position when it is released.
NOTE: If the pump has not broken free after five
seconds, press the STOP button (U) or the
motor control could encounter an overload error.
After multiple attempts to free the pump, allow
the motor to cool for one minute and see Trou-
bleshooting, page 21.
6. Remove the hose inlet from the pump outlet (L) and
walk the water out of the hose.
a. Starting at the pump, elevate the hose and
slowly move towards the hose outlet. As you
move towards the hose outlet, the remaining
water will drain from the hoses.
7. Perform Pump Pressure Setting procedure, page
13.
8. Reattach the hose to the pump outlet (L). The sys-
tem is ready to prime with material.
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Operation
3A4789E 13
Pump Pressure Setting
1. Attach the pressure test hose (A) to the pump outlet
(L) with the pressure test hose ball valve turned to
OPEN.
2. Place the end of the hose in a waste container.
3. Press the START button (U). Water should flow from
the outlet of the pressure test hose.
4. Set the water flow meter (R) to the approximate
level needed for pumping material by adjusting the
water flow adjustment valve (GG).
• 2.5 gpm for MP-20
• 5 gpm for MP-40
5. Use the speed selector knob (V) to change the
pump speed to level 2.
6. Slowly close the pressure test hose ball valve.
7. Observe the pressure setting on the pressure
gauge.
8. Slowly open the pressure test hose ball valve to
relieve any remaining pressure.
9. Press the STOP button (U).
10. To increase pressure, evenly tighten the stator bolts.
Evenly loosen the stator bolts to decrease pressure.
11. Repeat steps 3-10 until desired pressure is
achieved.
NOTE: Over-tightening the stator can wear out the
stator prematurely. Under-tightening the stator will
cause the pump to under perform and have reduced
output. System is factory-set to a pressure of
approximately 300 psi.
12. Remove the pressure test hose (A) from the pump
outlet (L).
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Operation
14 3A4789E
Prime and Pump Material
NOTE: To reduce risk of a hose pack-out, pump material
using the shortest required length of hose.
Prime and Pump
1. Prime the hoses and system with water. See Prim-
ing Hoses with Water (page 10) and Priming Sys-
tem with Water (page 12).
2. Verify that material hose is attached to the pump
outlet.
NOTE: To reduce waste, use a short length of hose
while adjusting the material consistency. Additional hose
lengths can be added once desired material consistency
is achieved.
3. Add dry material:
Set a bag of material on the center of the hopper
grate (G) so the teeth are in the middle of the bag.
Twist the bag 15 degrees in both directions to rip
open, and lift both ends of the bag so the dry mate-
rial falls into the hopper. Dispose of the bag.
NOTE: Keep the hopper filled with dry material
when priming with material and pumping.
4. Press the water pump button (Z) (on water pump
models) and START button (U). Material should
start to flow from the hose outlet (L).
5. Adjust the water flow rate using the water flow
adjustment valve (GG) until the desired material
consistency is achieved.
6. Pump and apply material according to material
manufacturer’s specifications.
NOTE: To stop dispensing momentarily, press the water
pump button (Z) (on water pump models) and STOP
button (U). To resume dispensing, press the water pump
button (Z) and START button (U).
If the material is approaching its cure time, or if the sys-
tem will be idle for enough time for material to begin cur-
ing in the system, Flush the system (see page 16).
7. When pumping is completed, press the water pump
button (Z) and the STOP button (U).
8. Follow Shutdown, page 18.
To help prevent injury from moving parts, do not
operate with the grate (J) removed.
To prevent injury from splashing fluid, always follow
the Pressure Relief Procedure, page 15, before
disconnecting any hoses or hose fittings.
Hose pack-out can occur while using this equipment.
During a pack-out, equipment and fluid will stay
pressurized. If a pack-out occurs, follow the Pressure
Relief Procedure, page 15, before disconnecting any
hoses or hose fittings.
Adding material to the hopper generates clouds of
dust, and exposes the user to the sharp teeth on
the hopper grate. Always wear protective equip-
ment when adding material to the hopper.
NOTICE
Failure to flush prior to material curing in the system
will result in damage to the system and may require
replacement of all system parts in contact with
material.
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Operation
3A4789E 15
Pressure Relief Procedure
1. Push the STOP button (U).
2. Hold the hose outlet firmly against a designated
waste container.
3. Turn the speed control knob (V) to speed 1.
4. Hold the pump direction switch (W) in the REV
position and push the START button (U).
5. Allow the pump to run in reverse for several seconds
while holding the pump direction switch (W) in the
REV position.
NOTE: If the pump is stalled, do not run the pump
for more than five seconds at a time or the motor
control could encounter an overload error. After mul-
tiple attempts to free the pump, allow the motor to
cool for one minute.
6. Push the STOP button (U) after five seconds and
release the pump direction switch (W). The switch
will return to its normal FWD position.
7. Turn the main power disconnect switch (T) to OFF.
8. If you suspect the hose is still clogged or that pres-
sure has not been fully relieved after following the
previous step:
a. Starting at the open hose outlet, VERY
SLOWLY open the coupling while maintaining
control of the hose.
b. Clear the hose. If there is still pressure trapped
down the line, work your way back to the pump
by individually opening each coupling between
each hose connection. Maintain control of each
hose and VERY SLOWLY open each coupling
until pressure has been fully relieved.
Follow the Pressure Relief Procedure
whenever you see this symbol.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as splashing fluid and moving
parts, follow the Pressure Relief Procedure when you
stop dispensing and before cleaning, checking, or ser-
vicing the equipment.

Operation
16 3A4789E
System Flush
1. With the pump stopped, turn the speed control knob
(V) to speed level one.
2. Place the hose outlet in a waste container.
3. Flush material from the hopper and the mixing
chamber.
a. Press the water pump button (Z) (on water
pump models) and START button (U) to begin
flushing out any remaining material until the
hopper is empty.
b. Once the hopper is empty of all material, press
the STOP button (U) to stop the pump.
c. Rinse the hopper (H) with the attached water
wash-down hose (S).
d. Press the START button (U) and run the pump
until no water is left inside the hopper.
4. If there is still material left in the mixing chamber
after flushing with water, use the clean-out shaft (M).
a. Turn the main power disconnect switch (T) to
OFF.
b. Undo the motor latch (K) and swing the motor
assembly (E) open.
c. Remove the drive/mix shaft (D) and replace with
the clean-out shaft (M).
NOTE: Only use the clean-out shaft (M) if mate-
rial cannot be cleaned using normal flushing
means. Excessive use of the clean-out shaft
can cause premature wear to the system.
d. Slowly swing the motor assembly toward its
closed position, stopping shortly before the
motor shaft adapter (MS) and clean-out shaft
(M) touch.
e. Make sure the motor shaft adapter (MS) and
clean-out shaft (M) are aligned so the clean-out
shaft flat slides into the motor shaft adapter slot.
If they do not align, rotate them into position.
f. Swing the motor completely shut and lock it in
place with motor latch (K).
g. Turn the main power disconnect switch (T) to
ON and press the water pump button (Z) (on
water pump models).
h. Spray the hopper (H) with water.
i. Press the START button (U) and run the pump
until no water is left in the hopper. Press the
STOP button (U) and water pump button (Z) (on
water pump models) to stop the pump.
j. Make sure the mixing chamber is clean. If not,
repeat step 5h and 5i until clean.
k. Repeat steps 5a through 5f, but replace the
clean-out shaft (M) with the drive/mix shaft (D).
5. Remove the hose inlet from the pump outlet (L) and
attach the hose to the water pump system bypass
outlet (HH).
NOTICE
Failure to flush prior to material curing in the system
will result in damage to the system and may require
replacement of all system parts in contact with
material.
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NOTICE
Only run the pump with the clean-out shaft (M) while
the speed control knob (V) is set to level one. Using
the clean-out shaft at higher speed levels may cause
damage to shaft and hopper.
D
M

Operation
3A4789E 17
Hose Flush
1. Attach hose to the water pump system bypass outlet
(HH).
2. Open the water pump outlet ball valve and press the
water pump button (Z). Run until heavy sediment
has been flushed and clean water begins to exit the
hose outlet.
3. Press the water pump button (Z) to stop dispensing
and close the ball valve.
4. Remove the remaining material in the hoses with a
a hose clean-out ball:
a. Place the hose outlet into a waste container.
b. Remove the hose inlet from the water pump out-
let and place a hose clean-out ball within the
hose inlet. The ball must be wetted down before
inserting. If using a 1 in. (25 mm) whip hose,
begin with the smallest clean-out ball.
c. Reattach the hose to the water pump system
bypass outlet (HH), open the ball valve, and
press the water pump button (Z) to resume
flushing the hose.
d. The hose clean-out ball will be pushed out of
the hose after several minutes. Once the ball is
pushed through the hose, press the water pump
button (Z). Repeat until all sediment is removed
from the hose.
e. If using a 1 in. (25 mm) whip hose, remove the
hose and transition fitting and repeat the pro-
cess using the large clean-out ball on the
remaining hoses. Once the ball is pushed out,
stop the water pump. Insert the large clean-out
ball and flush the hose repeatedly until sedi-
ment is removed from the hose. Then reattach
the transition fitting and whip hose.
5. Turn the main power disconnect switch (T) to OFF.
6. Dispose of all waste material in accordance with
local rules and regulations. See manufacturer SDSs
for additional information.
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Operation
18 3A4789E
Shutdown
1. Follow System Flush (page 16) and Hose Flush
(page 17).
2. Disconnect the power supply.
3. Drain water from the water pump system.
Winterizing and Extended
Storage
1. Connect the power cable to the appropriate power
source and turn the main power disconnect switch
(T) to ON.
2. If connected to the water pump inlet, disconnect the
water feed hose.
3. Disconnect the water assembly hose (WH) from the
water assembly control inlet (WC). Loosen the drain
cock (DC) behind the water flow meter, fully open
the water flow adjustment valve (GG), fully open the
water pump ball valve (BV), and then open the spray
gun latch on the water wash-down hose (S).
4. Press and hold the water prime button (Y) until
water has stopped draining from all openings, then
release the button.
5. Press the water pump button (Z) (on water pump
models) to turn the water pump on and let it run for
15 seconds to expel any excess water. Press the
button again to stop the water pump.
6. Turn the main power disconnect switch (T) to OFF
and disconnect from the power supply.
7. Leave all components open and detached until the
next use.
8. Make sure the motor has been fully greased and the
mixing pump has been thoroughly cleaned and no
material remains.
NOTICE
In cold environments, water left in the pump system
could freeze and damage the equipment. When work-
ing in cold environments, drain all water from the
pump system to avoid damage.
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Operation
3A4789E 19
Startup After Extended Storage
Reassemble all disconnected hoses and close all water
drain openings before startup.
If the pump will not startup after an extended period of
storage, perform the following steps:
1. Loosen the three bolts on the end cap by approxi-
mately two turns.
2. Insert a flat screwdriver blade into the provided slots
between the end cap and the pump head.
3. Gently pry on both sides until the cover lifts off the
pump head.
4. Restart the water pump and observe that it starts up
and operates correctly. While the pump is running,
tighten the three bolts.
5. Press the water pump button (Z) (on water pump
models) to turn off the water pump and press and
hold the water prime button (Y).
6. Slowly open the flow meter valve until water can be
seen passing through the flow meter.
7. Release the water prime button (Y) and make sure
the water has stopped. The mixing pump is now
ready for use.
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Operation
20 3A4789E
Routine Maintenance
The following maintenance should be
performed daily:
1. Flush the system (see Flush, page 13).
2. Perform the Pressure Relief Procedure, page 8.
3. Clean the hopper with a scrub pad. It is recom-
mended that you clean the outside of the sprayer
with a cloth and water.
4. Check the pump, seals, hoses, couplings, and
cables for wear and damage. Replace if necessary.
5. Grease seals daily via the grease fitting (GF)
located on the motor flange. Use water resistant,
corrosion inhibited grease.
NOTICE
Failure to clean properly after use will damage seals
and moving parts due to wear from material build-up.
To avoid damage, properly clean the unit after each
use.
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